Sampling-based Nystrom approximation and kernel quadrature

We analyze the Nyström approximation of a positive definite kernel associated with a probability measure. We first prove an improved error bound for the conventional Nyström approximation with i.i.d. sampling and singular-value decomposition in the continuous regime; the proof techniques are borrowe...

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Bibliographic Details
Main Authors: Hayakawa, S, Oberhauser, H, Lyons, T
Format: Conference item
Language:English
Published: Proceedings of Machine Learning Research 2023